All of the elements in a period have
the same number of atomic orbitals
. For example, every element in the top row (the first period) has one orbital for its electrons. All of the elements in the second row (the second period) have two orbitals for their electrons. As you move down the table, every row adds an orbital.
Do elements in the same group have the same chemical properties?
Each element within a group has
similar physical or chemical properties because of its atom’s outermost electron shell
(most chemical properties are dominated by the orbital location of the outermost electron).
They exhibit
similar chemical properties
. Elements within the same period have different number of electrons in their valence shells (the number is increasing from left to right) and different valence shell electron configuration. Therefore, elements in the same period are chemically different.
Do elements in Period 3 have similar chemical properties?
Elements in period 3 have
similar chemical properties
. I. II. Elements in group 7 show a gradual change in physical properties.
Which two elements are in the same period?
Elements that are in the same period have chemical properties that are not all that similar. Consider the first two members of period 3:
sodium (Na) and magnesium (Mg)
. In reactions, they both tend to lose electrons (after all, they are metals), but sodium loses one electron, while magnesium loses two.
What is the difference between a family of elements and elements in the same period?
The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have
the same number of valence electrons and similar chemical properties
. The horizontal rows on the periodic table are called periods.
Which element is in Group 2 period 3?
Magnesium
(symbol Mg) is an alkaline earth metal and has common oxidation number +2.
Why does the third period have 8 elements?
According to the 2n
2
rule, the maximum number of electrons in the third period = 2 x (3)
2
= 18. But, the
last shell cannot accommodate more than 8 electrons
so, the number of electrons in third period is 8. Hence, the number of elements is also 8.
What do period 3 elements have in common?
They all contain
the same amount of electron shells
What element is in group 17 period 2?
| Term Beryllium Definition 4 Be Group 2 Period 2 | Term Chlorine Definition 17 Cl Group 17 Period 3 | Term Xenon Definition 54 Xe Group 18 Period 5 | Term Bromine Definition 35 Br Group 17 Period 4 | Term Neon Definition 10 Ne Group 18 Period 2 |
|---|
Which element is in Group 17 and Period 3 of the periodic table?
Chlorine
is a halogen in group 17 and period 3.
How many elements are in the 6th period?
The sixth period contains
32 elements
, tied for the most with period 7, beginning with caesium and ending with radon.
What are the radioactive elements from 90 to 103 called?
The Actinides
What elements have similar properties?
Elements in the same group of the
periodic table have similar chemical properties. Elements can be classified as metals, metalloids, and nonmetals, or as a main-group elements, transition metals, and inner transition metals.
Are groups vertical or horizontal?
A group is a
vertical row
of the periodic table.
What element is in group 16 Period 2?
The atomic number of the element located in group 16, period 2 of the periodic table is 8.
